1 /* $NetBSD: ata_raid_nvidia.c,v 1.5 2022/03/19 13:51:01 hannken Exp $ */
2
3 /*-
4 * Copyright (c) 2000 - 2008 S�ren Schmidt <sos@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /*
30 * Support for parsing nVIDIA MediaShield RAID controller configuration blocks.
31 *
32 * Adapted to NetBSD by Tatoku Ogaito (tacha@NetBSD.org)
33 */
34
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: ata_raid_nvidia.c,v 1.5 2022/03/19 13:51:01 hannken Exp $");
37
38 #include <sys/param.h>
39 #include <sys/buf.h>
40 #include <sys/bufq.h>
41 #include <sys/conf.h>
42 #include <sys/device.h>
43 #include <sys/disk.h>
44 #include <sys/disklabel.h>
45 #include <sys/fcntl.h>
46 #include <sys/vnode.h>
47 #include <sys/kauth.h>
48
49 #include <miscfs/specfs/specdev.h>
50
51 #include <dev/ata/atareg.h>
52 #include <dev/ata/atavar.h>
53 #include <dev/ata/wdvar.h>
54
55 #include <dev/ata/ata_raidreg.h>
56 #include <dev/ata/ata_raidvar.h>
57
58 #ifdef ATA_RAID_DEBUG
59 #define DPRINTF(x) printf x
60 #else
61 #define DPRINTF(x) /* nothing */
62 #endif
63
64 #ifdef ATA_RAID_DEBUG
65 static const char *
ata_raid_nvidia_type(int type)66 ata_raid_nvidia_type(int type)
67 {
68 static char buffer[16];
69
70 switch (type) {
71 case NV_T_SPAN: return "SPAN";
72 case NV_T_RAID0: return "RAID0";
73 case NV_T_RAID1: return "RAID1";
74 case NV_T_RAID3: return "RAID3";
75 case NV_T_RAID5: return "RAID5";
76 case NV_T_RAID01: return "RAID0+1";
77 default:
78 snprintf(buffer, sizeof(buffer), "UNKNOWN 0x%02x", type);
79 return buffer;
80 }
81 }
82
83 static void
ata_raid_nvidia_print_info(struct nvidia_raid_conf * info)84 ata_raid_nvidia_print_info(struct nvidia_raid_conf *info)
85 {
86 printf("******** ATA nVidia MediaShield Metadata ********\n");
87 printf("nvidia_id <%.8s>\n", info->nvidia_id);
88 printf("config_size %d\n", info->config_size);
89 printf("checksum 0x%08x\n", info->checksum);
90 printf("version 0x%04x\n", info->version);
91 printf("disk_number %d\n", info->disk_number);
92 printf("dummy_0 0x%02x\n", info->dummy_0);
93 printf("total_sectors %d\n", info->total_sectors);
94 printf("sectors_size %d\n", info->sector_size);
95 printf("serial %.16s\n", info->serial);
96 printf("revision %.4s\n", info->revision);
97 printf("dummy_1 0x%08x\n", info->dummy_1);
98 printf("magic_0 0x%08x\n", info->magic_0);
99 printf("magic_1 0x%016jx\n", info->magic_1);
100 printf("magic_2 0x%016jx\n", info->magic_2);
101 printf("flags 0x%02x\n", info->flags);
102 printf("array_width %d\n", info->array_width);
103 printf("total_disks %d\n", info->total_disks);
104 printf("dummy_2 0x%02x\n", info->dummy_2);
105 printf("type %s\n", ata_raid_nvidia_type(info->type));
106 printf("dummy_3 0x%04x\n", info->dummy_3);
107 printf("stripe_sectors %d\n", info->stripe_sectors);
108 printf("stripe_bytes %d\n", info->stripe_bytes);
109 printf("stripe_shift %d\n", info->stripe_shift);
110 printf("stripe_mask 0x%08x\n", info->stripe_mask);
111 printf("stripe_sizesectors %d\n", info->stripe_sizesectors);
112 printf("stripe_sizebytes %d\n", info->stripe_sizebytes);
113 printf("rebuild_lba %d\n", info->rebuild_lba);
114 printf("dummy_4 0x%08x\n", info->dummy_4);
115 printf("dummy_5 0x%08x\n", info->dummy_5);
116 printf("status 0x%08x\n", info->status);
117 printf("=================================================\n");
118 }
119 #endif
120
121 int
ata_raid_read_config_nvidia(struct wd_softc * sc)122 ata_raid_read_config_nvidia(struct wd_softc *sc)
123 {
124 struct dk_softc *dksc = &sc->sc_dksc;
125 struct nvidia_raid_conf *info;
126 struct vnode *vp;
127 int bmajor, error, count;
128 dev_t dev;
129 uint32_t cksum, *ckptr;
130 struct ataraid_array_info *aai;
131 struct ataraid_disk_info *adi;
132 static struct _arrayno {
133 uint64_t magic1;
134 uint64_t magic2;
135 struct _arrayno *next;
136 } arrayno = { 0, 0, NULL}, *anptr;
137
138 info = kmem_zalloc(sizeof(*info), KM_SLEEP);
139
140 bmajor = devsw_name2blk(dksc->sc_xname, NULL, 0);
141
142 /* Get a vnode for the raw partition of this disk. */
143 dev = MAKEDISKDEV(bmajor, device_unit(dksc->sc_dev), RAW_PART);
144 error = bdevvp(dev, &vp);
145 if (error)
146 goto out;
147
148 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
149 error = VOP_OPEN(vp, FREAD, NOCRED);
150 if (error) {
151 vput(vp);
152 goto out;
153 }
154
155 error = ata_raid_config_block_rw(vp, NVIDIA_LBA(sc), info,
156 sizeof(*info), B_READ);
157 VOP_CLOSE(vp, FREAD, NOCRED);
158 vput(vp);
159 if (error) {
160 aprint_error_dev(dksc->sc_dev,
161 "error %d reading nVidia MediaShield config block\n", error);
162 goto out;
163 }
164
165 #ifdef ATA_RAID_DEBUG
166 ata_raid_nvidia_print_info(info);
167 #endif
168
169 /* Check the signature. */
170 if (strncmp(info->nvidia_id, NV_MAGIC, strlen(NV_MAGIC)) != 0) {
171 DPRINTF(("%s: nVidia signature check failed\n",
172 dksc->sc_xname));
173 error = ESRCH;
174 goto out;
175 }
176
177 /* check if the checksum is OK */
178 for (cksum = 0, ckptr = (uint32_t *)info, count = 0; count < info->config_size;
179 count++)
180 cksum += *ckptr++;
181 if (cksum) {
182 DPRINTF(("%s: nVidia checksum failed (0x%02x)\n",
183 dksc->sc_xname, cksum));
184 error = ESRCH;
185 goto out;
186 }
187
188 /*
189 * Lookup or allocate a new array info structure for
190 * this array. Since nVidia raid information does not
191 * provides array# directory, we must count the number.
192 * The available traces are magic_1 and magic_2.
193 */
194 for (anptr = &arrayno, count = 0; anptr->next; anptr = anptr->next, count++) {
195 if (anptr->magic1 == info->magic_1 &&
196 anptr->magic2 == info->magic_2)
197 break;
198 }
199 if (anptr->next == NULL) {
200 /* new array */
201 anptr->magic1 = info->magic_1;
202 anptr->magic2 = info->magic_2;
203 anptr->next = kmem_zalloc(sizeof(arrayno), KM_SLEEP);
204 }
205 aai = ata_raid_get_array_info(ATA_RAID_TYPE_NVIDIA, count);
206
207 aai->aai_status = AAI_S_READY;
208 if (info->status & NV_S_DEGRADED)
209 aai->aai_status |= AAI_S_DEGRADED;
210
211 switch (info->type) {
212 case NV_T_RAID0:
213 aai->aai_level = AAI_L_RAID0;
214 break;
215
216 case NV_T_RAID1:
217 aai->aai_level = AAI_L_RAID1;
218 break;
219
220 case NV_T_RAID5:
221 aai->aai_level = AAI_L_RAID5;
222 break;
223
224 case NV_T_RAID01:
225 aai->aai_level = AAI_L_RAID0 | AAI_L_RAID1;
226 break;
227
228 case NV_T_SPAN:
229 aai->aai_level = AAI_L_SPAN;
230 break;
231
232 default:
233 aprint_error_dev(dksc->sc_dev,
234 "unknown nVidia type 0x%02x\n", info->type);
235 error = EINVAL;
236 goto out;
237 }
238
239 aai->aai_type = ATA_RAID_TYPE_NVIDIA;
240 aai->aai_interleave = info->stripe_sectors;
241 aai->aai_width = info->array_width;
242
243 aai->aai_ndisks = info->total_disks;
244 aai->aai_capacity = info->total_sectors;
245 aai->aai_heads = 255;
246 aai->aai_sectors = 63;
247 aai->aai_cylinders = aai->aai_capacity / (aai->aai_heads * aai->aai_sectors);
248 aai->aai_offset = 0;
249 aai->aai_reserved = 2;
250
251 adi = &aai->aai_disks[info->disk_number];
252 adi->adi_dev = dksc->sc_dev;
253 adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
254 adi->adi_sectors = aai->aai_capacity;
255 adi->adi_compsize = aai->aai_capacity / info->array_width;
256
257 error = 0;
258
259 out:
260 kmem_free(info, sizeof(*info));
261 return (error);
262 }
263